<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>元素遍历</title>
		<!-- 元素遍历 用于DOM树中遍历元素[理解:针对元素嵌套,父子级]
		 children()
		 parent()
		 
		 siblings()
		 next()
		 prev()
		 each()
		 -->
		 
	</head>
	<body>
		 
	</body>
	
</html>